Frequencies for first 10,000 rows of rx7v1c3 variable in nhamcsopd2010 dataset :

   for rx7, |
 level 1 of |
multum drug |
category #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,989       99.89       99.89
        040 |          1        0.01       99.90
        057 |          9        0.09       99.99
        097 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Mar 2016